Drawing-roll.



W. H. BOLDUG.

DRAWING ROLL.

APPLIUATIONIILED AUG. 2, 1910.

1,018,867. Patented Feb. 27, 1912.

WITNESSES: 1v VENTOR.

' fi BY v A TTORNEY.

WILLIAM H. BOLDU'C, OF CLIFTON HEIGHTS, PENNSYLVANIA.

DRAWING-ROLL.

Specification of Letters Patent.

Application liled August 2, 1910. Serial No. 575,099.

To all whom it may concern Be it known that I, WILLIAM H. BoLDUo, a citizen of the United States, residing in Clifton Heights, county of Delaware, and State of Pennsylvania, have invented certain new and useful Improvements in Drawing-Rolls, of which the following is a specification.

This invention relates to an improvement in top rolls of drawing frames and has special reference to the so-called French system of drawing. By this system, wool is drawn in a dry state through a machine which prepares the wool for the spinning frame. he top rolls in the French system of drawlng are held against fluted rolls, by means of heavily weighted levers. Much difficulty has been experienced in this class of work I in obtaining a covering for the top rolls of a satisfactory nature.

The principal object of the present invention is to provide a top drawing roll, which is efiicient in character, simple in structure and compartively inexpensive to manufacture.

A further object of the present invention is to provide a top drawing roll so constructed that when worn the parts may be readily replaced without material loss of time.

A still further object of the invention is to provide a top drawing roll working surface which serves to keep down static electricity and which may be readily peeled from off the said roll and a new covering applied.

A still further object of the present invention is to provide a top drawing roll so constructed as to reduce the number of weights ordinarily used upon a drawing frame.

Other objects of the invention relate to general details of construction and arrange ment of parts as will hereinafter more fully appear.

I The invention consists of the improvements hereinafter described. and finally claimed.

The nature, characteristic features and sec e .of the invention will be more fully un erstood from the following description taken with the accompanying drawing forming part hereof and in which:

Figure 1, is a view partly in elevation and partly in central section of a top drawing roll embodying the invention, and Fig. 2, is an end elevational View of the same.

In-the drawings the drawing roll, comprises a shaft 1, having formed integral therewith comparatively narrow enlarged cores 2. Built up upon the cores 2, are a series of concentric layers of material forming an outer covering and a foundation. The outer covering consists of very thin parchment paper 3. In practice bestlresults have been obtained by using for this covering 3, what is called in the trade animal par-ch,- ment. This parchment is strong, tough and Patented Feb. 27.1912. i

durable and provides a smooth even surface and serves to reduce static electricity which obviously is advantageous. The foundation of the drawing roll is composed of soft pliable rubber 4, interposed between layers of fabric 5, and 6. fulled into a thick soft pliable feltlike ma terial in contradistinction from being a woven cloth. Commercially, felt is particularly adapted for this purpose, although I do not wish to limit myself to the use thereof. In practice the layer of rubber is considerably thicker than either the canvas or felt, and the felt is thicker than the canvas. The purpose of the canvas 6, which is glued or otherwise united to the core 2, is to provide a suitable surface to accept the layer of rubber 4. The rubber and canvas layers may be readily united together by cementing, gluing or the like. Likewise, the rubber 4, felt 5, and parchment 3, may be glued or otherwise united together. In

this connection, it may be remarked that the parchment 3, forming the outer covering of The material 5, may be.

the roll may be easlly and readily peeled y from off the felt 5. This is important, in that, as the parchment wears away, a new covering may be expeditiously applied in view of the fact that the old parchment easily peels off from the felt. If the parchment 3, were applied to the-rubber 4, the parchment would not peel off and the roll would have to be placed in a lathe and trued up.

By the use of soft pliable rubber in the foundation for the covering 3, it may be said that such rubber provides a cushion-like portion for the felt 5. Aside, from this fact, the soft rubber layer 4, in combination with the felt 5, serves to reduce the number of weights needed to about one third of the-number of weights now in use from machines of the face, the fluted rollsdo not require many weights for keeping them in contact with the said drawing roll.

What I claim is: 1

1. A drawing roll provided with an outer covering comprising a single layer of parchment paper and a foundation composed of rubber, interposed between a layer of thick soft pliable feltlike material and alayer of canvas the various elements being united to each other and to the roll,

2. A drawing roll provided with an outer covering comprising a single layer of parch- I ment paper and a foundation composed of soft pliable rubber interposed between a d layer of fabric fulled into a thick soft pli- 15 able material and a layer of woven cloth the elements being united to each other and to the roll.

In testimony whereof I have hereunto signed myname.

WILLIAM H. BOLDUO.

Witnesses: 1

WILLI A J. JACKSON, CECILIA G: EYRE. 

